I’m not into rap, I don’t speak Irish Gaelic, and I think musicians trying to be actors (especially as them selves in serious roles) rarely works- but this movie is great. The band turns in great performances, the music is energetic, the visuals are clever without being distracting, and the story works.
Also: this movie very much earns its R rating. Swearing, violence, nudity, and holy cow so many drugs.